U.S. Cellular Field (formerly Comiskey Park) is a baseball ballpark in Chicago, Illinois. Owned by the Illinois Sports Facilities Authority, it is the home of the Chicago White Sox of Major League Baseball's American League. The park opened for the 1991 season, after the White Sox had spent 81 years at old Comiskey Park. The new park, completed at a cost of $167 million, also opened with the Comiskey Park name, but became U.S. Cellular Field in 2003 after U.S. Cellular bought the naming rights at $68 million over 20 years. It hosted the MLB All-Star Game that same year. Many sportscasters and fans continue to use the name Comiskey Park. Prior to its demolition, the old Comiskey Park was the oldest in-use ballpark in Major League Baseball, a title now held by Fenway Park in Boston.